20891085

素因数分解:

$3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{5779}}^1$

素因数の和:6028

約数の個数: 16

約数和(自身を含む): 33570240

約数和(自身を除く): 12679155

約数列:

[1, 3, 5, 15, 241, 723, 1205, 3615, 5779, 17337, 28895, 86685, 1392739, 4178217, 6963695, 20891085]

約数ペア:

[(1, 20891085), (3, 6963695), (5, 4178217), (15, 1392739), (241, 86685), (723, 28895), (1205, 17337), (3615, 5779)]